Delamination Growth in Polymer-Matrix Fibre Composites and the Use of Fracture-Mechanics Data for Material Characterization and Life Prediction

Jones, Rhys; Kinloch, A. J.; Michopoulos, John G.; Brunner, Andreas J.; Phan, Nam

doi:10.1016/b978-0-08-100540-8.00013-3

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2022

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“…A typical evaluation method of a fracture energy of mode-I is the double cantilever beam (DCB) test. [30][31][32][33][34][35] Many studies conducted the DCB test for the rectangular specimen of the laminate composites. On the other hand, there is no report using the test for the rod shape specimens.…”

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confidence: 99%

Direct measurement and verification of cohesive zone model parameters for basalt/PP rods using the transverse tensile test and virtual double cantilever beam test

2022

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To further our understanding of failure in thermoplastic-based composite rods, the mode I-governed cohesive zone model parameter of a basalt fiber reinforced polypropylene composite rod is evaluated. The relations between stress and strain, the maximum normal traction and final separation displacement are examined using a transverse tensile test method. The measured traction is verified by three-dimensional finite element analysis of rod-shaped double cantilever beam specimens. The numerical results show the close relation between the crack length and cube root of compliance, and yields a representative value of the mode I-governed critical fracture energy.

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